Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2001-01-22
JHEP 0107:001,2001
Physics
High Energy Physics
High Energy Physics - Phenomenology
15 pages, 6 figures minor changes
Scientific paper
10.1088/1126-6708/2001/07/001
We study the lepton-flavor violation processes tau ->mu gamma and mu->e gamma in two different examples of models with non-universal soft breaking terms derived from strings. We show that the predictions are quite different from those of universal scenarios. Non-universal A-terms provide an interesting framework to enhance the supersymmetric contributions to CP violation effects. We observe that in the case of the lepton-flavor violation we study, the non-universality of the scalar masses enhances the branching ratios more significantly than the non-universality of the A-terms. We find that the current experimental bounds on these processes restrict both the parameter space of the models and the texture of the Yukawa couplings which predicts the lepton masses, providing at the same time an interesting experimental test for physics beyond the Standard Model.
Carvalho Daniel F.
Gomez Mario E.
Khalil Shaaban
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